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#1
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acoustically transparent cloth?
I have been told that burlap is the best thing to use to cover 703
type board that is being used for bass traps or other exposed treatment. The board will NOT be built into any wood frame or other enclosure, it will be hung 4" off the wall by itself - so I'm looking for a cloth to cover the board without impacting it's acoustical properties. These are 4" thick 2ft x 4ft boards and I will probably take them to a local shop to have the material sewn around the board, kinda like "slipcovers" for living room furniture. But while I'm still waiting for the board to be delivered, I want to confirm that there is nothing better than raw burlap for this purpose? Although the most important purpose of these boards will be to control bass frequencies, I would prefer that the cloth covering not impact the acoustical properties of the board at any frequency (if possible). Is there anything other than burlap that I should be considering? Thanks. Steve |
#2
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"hollywood_steve" wrote in message om... I have been told that burlap is the best thing to use to cover 703 type board that is being used for bass traps or other exposed treatment. dont forget to discard the potatos. |
#3
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"hollywood_steve" wrote in message om... I have been told that burlap is the best thing to use to cover 703 type board that is being used for bass traps or other exposed treatment. dont forget to discard the potatos. |
#4
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If you want acoustical transparency, burlap isn't the best material. You'll get
better results with a synthetic fabric with a loose weave. |
#5
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If you want acoustical transparency, burlap isn't the best material. You'll get
better results with a synthetic fabric with a loose weave. |
#6
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hollywood_steve wrote:
I have been told that burlap is the best thing to use to cover 703 type board that is being used for bass traps or other exposed treatment. The board will NOT be built into any wood frame or other enclosure, it will be hung 4" off the wall by itself - so I'm looking for a cloth to cover the board without impacting it's acoustical properties. These are 4" thick 2ft x 4ft boards and I will probably take them to a local shop to have the material sewn around the board, kinda like "slipcovers" for living room furniture. But while I'm still waiting for the board to be delivered, I want to confirm that there is nothing better than raw burlap for this purpose? Although the most important purpose of these boards will be to control bass frequencies, I would prefer that the cloth covering not impact the acoustical properties of the board at any frequency (if possible). Is there anything other than burlap that I should be considering? It seems to me that you've missed the point of the combination of 703 and whatever you use to cover it. The purpose is absorbing sound. The opposites of absorbing sound are reflecting sound or being transparent to sound. You don't care whether the burlap absorbs the sound or passes the sound. You only want to be sure that the burlap doesn't reflect the sound. Therefore, you don't care whether or not the burlap covring the 703 is absorbtive or acoustically transparent, you only care whether or not it is reflective. As long as you cover the 703 with something that is no more reflective than 703, there will be no problem. Either the covering of the 703 will absorb the sound or the 703 will absorb the sound. All you care is that the sound be absorbed. Just taking an wild guess based on experience with burlap here, but I think that burlap is no more reflective than 703. |
#7
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hollywood_steve wrote:
I have been told that burlap is the best thing to use to cover 703 type board that is being used for bass traps or other exposed treatment. The board will NOT be built into any wood frame or other enclosure, it will be hung 4" off the wall by itself - so I'm looking for a cloth to cover the board without impacting it's acoustical properties. These are 4" thick 2ft x 4ft boards and I will probably take them to a local shop to have the material sewn around the board, kinda like "slipcovers" for living room furniture. But while I'm still waiting for the board to be delivered, I want to confirm that there is nothing better than raw burlap for this purpose? Although the most important purpose of these boards will be to control bass frequencies, I would prefer that the cloth covering not impact the acoustical properties of the board at any frequency (if possible). Is there anything other than burlap that I should be considering? It seems to me that you've missed the point of the combination of 703 and whatever you use to cover it. The purpose is absorbing sound. The opposites of absorbing sound are reflecting sound or being transparent to sound. You don't care whether the burlap absorbs the sound or passes the sound. You only want to be sure that the burlap doesn't reflect the sound. Therefore, you don't care whether or not the burlap covring the 703 is absorbtive or acoustically transparent, you only care whether or not it is reflective. As long as you cover the 703 with something that is no more reflective than 703, there will be no problem. Either the covering of the 703 will absorb the sound or the 703 will absorb the sound. All you care is that the sound be absorbed. Just taking an wild guess based on experience with burlap here, but I think that burlap is no more reflective than 703. |
#8
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guilford of maine cloth. not sure if i'm spelling it right. but it's
the industry standard for this and comes in a whole bunch of colors and styles. I think they have a new Rick James style coming out. It says "I'm Rick James" in a repeating pattern all over it. |
#9
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guilford of maine cloth. not sure if i'm spelling it right. but it's
the industry standard for this and comes in a whole bunch of colors and styles. I think they have a new Rick James style coming out. It says "I'm Rick James" in a repeating pattern all over it. |
#11
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#12
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Steve,
I'm looking for a cloth to cover the board without impacting it's acoustical properties. Arny nailed it. Unlike speaker grill cloth you'll put in front of a tweeter, there's no need to pay extra (usually a LOT extra) for fancy cloth that's rated for acoustic transparency. If the cloth absorbs a little on its own, this is not a problem (to quote Fletcher). You can use literally any soft cloth, including felt and other closed-weave fabrics that are absorbent but not reflective. --Ethan |
#13
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Steve,
I'm looking for a cloth to cover the board without impacting it's acoustical properties. Arny nailed it. Unlike speaker grill cloth you'll put in front of a tweeter, there's no need to pay extra (usually a LOT extra) for fancy cloth that's rated for acoustic transparency. If the cloth absorbs a little on its own, this is not a problem (to quote Fletcher). You can use literally any soft cloth, including felt and other closed-weave fabrics that are absorbent but not reflective. --Ethan |
#14
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"Ethan Winer" ethanw at ethanwiner dot com wrote in message ...
Steve, I'm looking for a cloth to cover the board without impacting it's acoustical properties. Arny nailed it. Unlike speaker grill cloth you'll put in front of a tweeter, there's no need to pay extra (usually a LOT extra) for fancy cloth that's rated for acoustic transparency. If the cloth absorbs a little on its own, this is not a problem (to quote Fletcher). You can use literally any soft cloth, including felt and other closed-weave fabrics that are absorbent but not reflective. --Ethan OK, I guess I have to be more careful selecting my words. I was primarily concerned with reflection, I did not even consider the absorbtive properties of the cloth itself. I just wanted to be sure that the cloth didn't reflect mid/high frequencies back into the room (I already have a very live room). A couple of these things are being placed so that they also break up some parallel wall reflections and I wanted full bandwidth absorbtion if possible. Buying textiles isn't something I have a lot of experience with, so can anyone provide some specific brand/models numbers? (or however you spec cloth) Something tells me that if I go into Cloth Club Warehouse and ask for "felt" that I might receive something very different than what I was looking for. thanks. steve |
#15
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"Ethan Winer" ethanw at ethanwiner dot com wrote in message ...
Steve, I'm looking for a cloth to cover the board without impacting it's acoustical properties. Arny nailed it. Unlike speaker grill cloth you'll put in front of a tweeter, there's no need to pay extra (usually a LOT extra) for fancy cloth that's rated for acoustic transparency. If the cloth absorbs a little on its own, this is not a problem (to quote Fletcher). You can use literally any soft cloth, including felt and other closed-weave fabrics that are absorbent but not reflective. --Ethan OK, I guess I have to be more careful selecting my words. I was primarily concerned with reflection, I did not even consider the absorbtive properties of the cloth itself. I just wanted to be sure that the cloth didn't reflect mid/high frequencies back into the room (I already have a very live room). A couple of these things are being placed so that they also break up some parallel wall reflections and I wanted full bandwidth absorbtion if possible. Buying textiles isn't something I have a lot of experience with, so can anyone provide some specific brand/models numbers? (or however you spec cloth) Something tells me that if I go into Cloth Club Warehouse and ask for "felt" that I might receive something very different than what I was looking for. thanks. steve |
#16
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Steve,
I did not even consider the absorbtive properties of the cloth itself. I just wanted to be sure that the cloth didn't reflect mid/high frequencies If you think about it, that's the same thing - if it doesn't reflect sound then it must absorb (or let it pass through). I go into Cloth Club Warehouse and ask for "felt" that I might receive something very different No, any felt is fine. Most fabrics are fine. You do need to hand select them, but it's not complicated. Hold the proposed fabric to your lips and try to blow through it. If you can blow through it easily, it's fine. Again, any soft fabric that's not shiny and obviously reflective will do. --Ethan |
#17
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Steve,
I did not even consider the absorbtive properties of the cloth itself. I just wanted to be sure that the cloth didn't reflect mid/high frequencies If you think about it, that's the same thing - if it doesn't reflect sound then it must absorb (or let it pass through). I go into Cloth Club Warehouse and ask for "felt" that I might receive something very different No, any felt is fine. Most fabrics are fine. You do need to hand select them, but it's not complicated. Hold the proposed fabric to your lips and try to blow through it. If you can blow through it easily, it's fine. Again, any soft fabric that's not shiny and obviously reflective will do. --Ethan |
#19
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(hollywood_steve) wrote in message . com...
I have been told that burlap is the best thing to use to cover 703 type board that is being used for bass traps or other exposed treatment. The board will NOT be built into any wood frame or other enclosure, it will be hung 4" off the wall by itself - so I'm looking for a cloth to cover the board without impacting it's acoustical properties. These are 4" thick 2ft x 4ft boards and I will probably take them to a local shop to have the material sewn around the board, kinda like "slipcovers" for living room furniture. But while I'm still waiting for the board to be delivered, I want to confirm that there is nothing better than raw burlap for this purpose? Although the most important purpose of these boards will be to control bass frequencies, I would prefer that the cloth covering not impact the acoustical properties of the board at any frequency (if possible). Is there anything other than burlap that I should be considering? Thanks. Steve Steve, I used $1.00 a yard plain burlap to wrap my 703 absorbers. Not that pretty and my studio smells like burlap. However, the absorbers work as expected in combination with my Mini-Traps. I'm very pleased with the sound of my room. Now if my music was as good.... DaveT |
#20
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Jay-AtlDigi wrote in message ...
Guilford of Maine (as somebody already mentioned) is a common choice. They have a fabric that is kind of like an extra nice burlap that is called Guilford 704 if memory serves. 701 actually. Guilford FR701, Style 2100 is the fabric that nearly every commercial vendor of "acoustic treatment panels" uses...to basically wrap Owens-Corning 703. |
#21
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Jay-AtlDigi wrote in message ...
Guilford of Maine (as somebody already mentioned) is a common choice. They have a fabric that is kind of like an extra nice burlap that is called Guilford 704 if memory serves. 701 actually. Guilford FR701, Style 2100 is the fabric that nearly every commercial vendor of "acoustic treatment panels" uses...to basically wrap Owens-Corning 703. |
#22
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#23
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